Management and performance

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com.liferay.portal.kernel.util.DateUtil_IW@5bb2169a — Photo: Vale's Archive

Management and Performance

Since the dam collapse in Brumadinho, Brazil, Vale has embarked on a journey to develop innovative solutions in the market, with the aim of reducing risks in the management and monitoring of its dams. Our risk management model adopts a conservative approach to Tailings Storage Facility (TSF) safety, with robust governance and multilayered protection and supervision, enhancing our ability to prevent accidents. As a result, external and independent companies periodically conduct reviews to update the physical and hydraulic safety conditions of the dams. These reviews comply with legal requirements outlined in Brazilian standards and agreements signed with official bodies such as the Public Prosecutor's Office (MP).

Download the Vale Tailings Dams Manual to stay informed about Vale's dam management and performance key concepts.

Access the Dams Manual

Evolution in Dam and Tailings Management

Governance for Dam and Tailings Management

Executive Compensation

• 30% to 70% of short-term variable compensation linked to Safety, Operational Safety, Sustainability, and DEI goals.

• Safety, Geotechnics, and Compliance area does NOT have goals linked to production or financial metrics

Dam Monitoring

Our Dam and Tailings Management

Tailings and Dams Management System:

The Tailings and Dams Management System (TDMS) establishes the guidelines for managing the safety of Vale's dams and tailings storage structures. The TDMS is aligned with the Global Industry Standard for Tailings Management (GISTM) and adopts the most advanced international guidelines as a reference. Through the pillars of People, Routine, Performance and Risk Management, the TDMS defines roles and responsibilities and establishes standards and requirements that translate Vale's Values, Ambitions and Principle for managing the safety of Dams and EARs.

Hazard Identification and Risk Analysis:

The Hazard Identification and Risk Analysis (HIRA) process is defined through a risk identification and improvement methodology aimed at events classified as Material Unwanted Events (MUEs), which are high-consequence incidents that require the highest level of attention. HIRA assists in identifying priority risks in the company and implementing critical controls that can prevent an MUE from occurring in the first place or minimize the consequences if an MUE occurs and also in the definition of actions with determined and feasible deadlines, for identified vulnerabilities, opportunities for improvement, studies to improve the understanding of a risk, treatments and reduction of risk priority, among others. The identified risks are recorded and managed in Vale's risk management system (Bwise).

External Reviews:

Vale requires periodic reviews of the physical and hydraulic safety conditions of dams, conducted by external and independent companies. These reviews comply with Brazilian legal requirements and commitments established with Brazilian authorities such as the Public Prosecutor's Office and the National Mining Agency.

Main reviews include:

• Regular Safety Inspection Report, with the issuance of a Declaration of Stability Condition in compliance with legal requirements

Engineer of Record (EoR) is the external professional assigned to monitor the structure, analyze monitoring and inspection data, and issue periodic reports;

Periodic Dam Safety Review (RPSB), with the issuance of a Declaration of Condition of Stability (DCE). The periodicity is defined according to the classification of the dam, in accordance with legal requirements.”

• Independent Audit in response to the demand of the Public Prosecutor

For more information on how Vale manages its dams and tailings, please refer to the Vale Tailings Dams Manual.

Photo: Vale's Archive

Dam Monitoring

Emergency Level:

In aligment with Vale’s public commitment to having no dams ins Brazil at level 3 of emergency by 2025, Vale has intensified its preventive, corrective, and monitoring actions on its structures. This has resulted in a substancial reduction in the number of tailings storage structures at the emergency level since 2020.

Currently, the 15 structures that are at emergency level are:

Level 1	Level 2	Level 3
5, Mutuca,6, 7A, B, B3/B4, Campo Grande, Dicao Leste, Doutor, Maravilhas II, Norte/Laranjeiras, Peneirinha, Pontal, Vargem Grande.	3/B4, Dique de Pedra, Forquilha I, Forquilha II, Grupo, Xingu.	Forquilha III, Sul Superior

Level 1

Level 2

Level 3

5, Mutuca,6, 7A, B, B3/B4, Campo Grande,
Dicao Leste, Doutor, Maravilhas II, Norte/Laranjeiras,
Peneirinha, Pontal, Vargem Grande.

3/B4, Dique de Pedra, Forquilha I,
Forquilha II, Grupo, Xingu.

Forquilha III, Sul Superior

EoR Lighthouse

In January 2020, Vale established the role of Engineer of Record (EoR) as an additional review step to strengthen the governance of its tailings management system. Below is the lighthouse that the EoR assigns to each dam and TSF, updated on 11/22/2024:

Legends

Learn more about the legends

Satisfactory

Satisfactory with restrictions and no compromising safety

Unsatisfactory with possible security compromise

Unsatisfactory with increased risk

MONTHLY PERFORMANCE ASSESSMENT	CRITERIA FOR CLASSIFICATION	REQUIRED ACTIONS	COMMUNICATION LEVELS
MONTHLY PERFORMANCE ASSESSMENT A SATISFACTORY WITH POSSIBLE OPERATIONAL IMPROVEMENTS	CRITERIA FOR CLASSIFICATION Field inspections: Normal operating condition, WITH corrective measures in place or operational improvements required; Monitoring System: tde instrumentation indicates normal and acceptable operating levels; Conservation Status Criteria: Score less tdan or equal to 3 in any of tde criteria of tde conservation status chart (standardized by tde ordinance 70.389, ANM); Hydraulic and Structural Assessment: main and secondary embankments show adequate safety factor considering tde plausible failure modes and tde spillway is designed according tde legal requirements and tde industry beast practices.	REQUIRED ACTIONS It is necessary to establish an action plan to address tde required operational improvements identified. If an action plan already exist it must be updated WITH tdese new actions as well as tde status of old actions	COMMUNICATION LEVELS 1st Line of Defense 1st Layer
MONtdLY PERFORMANCE ASSESSMENT B SATISFACTORY WITH RESTRICTION	CRITERIA FOR CLASSIFICATION Field inspection: It were registered anomalies tdat require corrective works in order to prevent anomalies to getting worse; Monitoring system: instrumentation indicates anomalies tdat need to be evaluate; Conservation Status Criteria: Score equal to 6 in any of tde criteria of tde conservation status chart (standardized by tde ordinance 70.389, ANM). Hydraulic and Structural Assessment: main and secondary embankments show adequate safety factor considering tde plausible failure modes and tde spillway has tde capability to allow tde	REQUIRED ACTIONS Require immediate actions to fix tde anomalies and to follow tde effectiveness of tdeses actions. It is necessary to increase tde frequency of surveillance.	COMMUNICATION LEVELS 1st Line of Defense 1st and 2nd Layers
MONtdLY PERFORMANCE ASSESSMENT C UNSATISFACTORY WITH POSSIBLE SAFETY ISSUES	CRITERIA FOR CLASSIFICATION Field inspection: It were registered anomalies WITH potential to compromise tde safety of tde structure; Monitoring system: tde instrumentation presents drift WITH potential to compromise tde safety of tde structure; Conservation Status Criteria: Score equal to 10 in any of tde criteria of tde conservation status chart (standardized by tde ordinance 70.389, ANM). Hydraulic and Structural Assessment: main and/or secondary embankments show safety factor under tde minimum required by tde regulations or tde industry best practices considering tde plausible failure modes .tde spillway is designed according tde legal requirements and tde industry beast practices.	REQUIRED ACTIONS Condition is not acceptable. Require tde emergency response plan activation and is necessary to notify tde autdorities. Its necessary tde support of tde senior technical team and to keep tde special surveillance model.	COMMUNICATION LEVELS 1st Line of Defense (botd layers) 2nd Line of Defense Executive Directors (Business Unit and Safety and Operational Risks)
MONtdLY PERFORMANCE ASSESSMENT D UNSATISFACTORY WITH POSSIBLE SAFETY ISSUES	CRITERIA FOR CLASSIFICATION There is a significant risk of serious failure and / or there is an ongoing destabilization process. It requires immediate attention by tde operation team, designer and specialists.	REQUIRED ACTIONS Mobilize resources for tde fast solution of tde dangerous condition. A crisis committee must be established to coordinate actions.	Níveis de comunicação Previous Levels and CEO

** Dique interno do Sistema Pontal

Want to Know More?

In Brazil, information on mining dams can be found in the Integrated Mining Dam Management System (SIGBM), provided by National Mining Agency.

Vale also provides the Mine Tailings Disclosure Table according to the criteria of the Church of England, for download: Disclosure table of TSFs aug/2023 (operated by Vale).

Technical Reports

In compliance with article 14 of Law 23,291/19, which instituted the dam safety policy in the state of Minas Gerais, Vale provides the following information and technical reports with respect to its dams:

Third-party companies that perform construction, installation, operation, renovation, expansion and heightening of dams (Portuguese only)
Water quality reports (Portuguese only)
Air Quality Report (Portuguese only)
Humidity and dam levels (Portuguese only)

Photo: Vale's Archive

For more information about our dams, please access the page Dams.
For information about our environmental, social and governance performance, access our ESG Portal.

Technical Reports

Vale

Initiatives

Vale

Initiatives

Vale

Initiatives